Martian helicopters might seem like a sci-fi concept, as Mars' atmosphere isn't friendly to aircraft. But actually, the idea is more real than you might think.
Dry maple seeds on their branch. Their wings allow the seeds to spin and glide on the wind, carrying them away from their parent tree. Every other Friday, the Outside/In team here at NHPR answers ...
Helicopters on Mars may sound like something from a science fiction novel — or perhaps just a typical "Doctor Who" episode. But actually, they're not fully confined to the world of sci-fi; after all, ...
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